Microsoft MVP

I don't understand hardly anything in your post unfortunately. Perhaps there's a language barrier here, but if you wouldn't mind rephrasing things, I might get a better interpretation of what you're trying to ask, only then.

The only things I can gather here is your statement with a question mark at the end about resolution, you upgraded from XP to Windows 8, and your brother is using Windows 7. But I don't get what you mean by "notification kind of stuff". That's very vague...

You've started point #1 with "can't use snap apps" though, so is this something you have figured out and have already confirmed, or are you asking whether you CAN? Or Why you cannot? I don't get it.